- All sections
- B - Performing operationstransporting
- B21C - Manufacture of metal sheets, wire, rods, tubes, profiles or like semi-manufactured products otherwise than by rollingauxiliary operations used in connection with metal-working without essentially removing material
- B21C 37/30 - Finishing tubes, e.g. sizing, burnishing
Patent holdings for IPC class B21C 37/30
Total number of patents in this class: 98
10-year publication summary
|
4
|
1
|
5
|
6
|
6
|
5
|
2
|
5
|
3
|
0
|
| 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| JFE Steel Corporation | 6935 |
24 |
| Forum US, Inc. | 337 |
3 |
| Nakata Manufacturing Co., Ltd. | 36 |
3 |
| Nippon Steel Corporation | 6344 |
3 |
| Belvac Production Machinery, Inc. | 154 |
2 |
| Dalian University of Technology | 1526 |
2 |
| Rattunde & Co GmbH | 44 |
2 |
| Rattunde und Co GmbH | 2 |
2 |
| Salzgitter Flachstahl GmbH | 159 |
2 |
| SMS Group GmbH | 1131 |
2 |
| Solar Turbines Incorporated | 484 |
2 |
| Sumitomo Metal Industries, Ltd. | 367 |
2 |
| Mannesmann Precision Tubes GmbH | 7 |
2 |
| Rattunde AG | 70 |
2 |
| Jiangsu Yinhuan Precision Steel Tube CO.,LTD. | 6 |
2 |
| Variperm Energy Services Inc. | 55 |
2 |
| Baoyin Special Steel Tube Co., Ltd. | 3 |
2 |
| Samsung Electronics Co., Ltd. | 147622 |
1 |
| General Electric Company | 13859 |
1 |
| Baker Hughes Incorporated | 5248 |
1 |
| Other owners | 36 |